In the tab 'EDIT' - 'Settings' - 'Editor access' you can assign access to edit the survey to users who are already registered on 1KA.
In the input field there, enter one user's email address in each line and, if desired, add a message for the user to whom you are granting access. The message will be displayed in an email received by the user. The user will be automatically notified of the new access by clicking on the 'Save Changes' button.
Once you have added users, you can specify the level of access that each user has in the 'Users with access to survey' section by clicking on the edit icon to the right of each name. This allows you to set for each survey editor which tabs he can see (dashboard, edit, testing, publish, data, analysis) and whether he can export data. You can further restrict the editing option by indicating that they cannot unlock the survey.